Auxiliary air device



Nov. 6, 1923. V 1,473,317 V. c. RANDALL ET AL AUXILIARY AIR DEVICE Filed May 22. 1922 awue/wtms 1 a/i'awZa/Z Uzww Patented Nov. 6, 1923.

i i T PATENT OFFICE.

VERNON C. RANDALL AND JAMES E. MGGINLEY, 'OF PORTSMOUTH, VIRGINIA.

I AUXILIARY AIR DEVICE.-

Application filed May 22,

To all whom it may concern.

Be it known that we, VERNON C. RANDALL and JAMES E. MOGINLEY, citizens of the United States, residing at Portsmouth, in the county of Norfolk and State of Virginia, have invented certainlnew and useful Improvements in Auxiliary Air Devices, of which the following is a specification, reference being had to the accompanying 'idrawings. I

This invention relates to auxiliary air devices for internal combustion engines,,and more particularly to a device of this character which is adapted for connection with the radiator of the engine to draw'moistened air therefrom.

An important object of the invention is to provide a controlling valve for a device of this character which is simple in construction and arrangement and which does not employ springs, while at the same time graduating the amount of air admitted to the manifold. v

A further object of the invention is to provide a novel and improved control apparatus for the admission of air to the manifold of internal combustion engines.

These and other objects we accomplish by the construction and arrangement shown in the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of our invention and wherein like reference characters designate like parts throughout. V

In the drawings: I

Figure 1 is a side elevation partially in section showing apparatus constructed in accordance with our invention applied to an internal combustion engine;

Figure 2 is a detail vertical sectional View taken through the apparatus; and

Figure 3 is a bottom plan view thereof.

Referring now more particularly to the drawings, the numeral 10 indicates a substantially circular cap having a central bore 11 opening through one end thereof, the outer end of the bore being provided with screw-threads 12. The bore 11 communicates with a restricted bore 13 thereby forming interiorly of the cap a shoulder 14: directed toward the open end of the cap. The bore 13 is in communication with a bore 15 formed in an extension 16 and providing an outlet,

1922'. Serial .No. 562,891.

the end of the extension being externally screw-threaded, as indicated at 17, for engagement formed in 'thewall of the manifold.

The numeral19 designates a body circular in form and having its exterior screwthreaded, as'indicated at 20, for coaction with the screw-threads 12 of the bore 11 of the cap 10. This member is provided with a Wrench'receiving shank through which opens an inlet-21 communicating with a bore 22 formed in the body 19.

The numeral 23 designates an insert of substantially the diameter of the bore ll of the cap 10 andhaving its lower end reduced,

.as indicated at 24:, thereby forming a downwardly directed shoulder 25. The insert 23 is adapted to be disposed within the cap 10 with its upper end abutting the shoulder 14 valves 28 and 29 which are of different weights and sizes and which normally close ports 30 and 31 connecting the bores 26 and 27 with the bore 22 of the body 19. and consequently with the inlet 21.

28 and 29 and these ports are preferably of different sizes, the port of the bore 26 or 27 in, a screw-threaded opening v The ports 3O and 31 are normally closed by the valves containing the smaller valve being the smaller. The inlet21 is in communication through a conduit 32 withthe space above the water level in the interior of the radiator 33 by means of which the cooling water of the engine is cooled. This conduit between the inlet 21 and the radiator33 preferably lies against the exhaust manifold M through substantially the entire length thereof so that moist'air drawn from the radiator will be heated by the heat radiating from the manifold. The radiator 33 is provided with an overflow pipe'34c, theupper end of which opens into the radiator at a point below the upper end of the conduit 32 so that the water within the radiator will not at any time rise to sufficient height to pass into this conduit.

In the operation of our device, air is drawn by the partial vacuum created Within the manifold from the radiator and passes through one of the ports and 31 into the manifolr. If the engine be operat ng at alowv speed, only thesmaller of the valves 28 and 29 will be open and consequently only a small amount of air will be admitted to the manifold. As the speed increases, the second valve will be lifted from its seat and air Will pass through the second port to augment the supply to the manifold.

It Will be obvious that While We have disclosed the use of but two of the valves and ports, the number may be increased to any desired extent and that by so increasing the number of valves and ports employed, the proportion of air admitted to the degree of vacuum formed Within the manifold will be more finely regulated it being of course understood that a similar number of graduated valves and ports Will be employed in each instance. It Will furthermore be obvious that similar changes may be employed Without in any manner departing from the spirit of our invention and We accordingly do not limit ourselves to the specific structure hereinbefore set forth except hereinafter claimed Vi e claim:

In an auxiliary air device, a chaml'ier comprising a cap having an outlet adapted for connection With the intake manifold of an internal combustion engine, said cap having a bore provided with a reduction communicating with said outlet, the reduction forming a shoulder, said here being screw-threaded, a body externally screw-threaded for engagement with the screw-threads of said bore, said body having a bore and an inlet communicating With said bore, an insert fitting the bore of the cap and having a re duction fitting the bore of the body, said insert being provided with a plurality of vertical bores each communicating at its lower end by a port with the bore of the body, and check valves of varying; Weights disposed Within said bores and normally closing said ports.

In testimony whereof We hereunto affix our signatures.

VERNON C. RANDALL. JAMES E. MOGINLEY. 

